@article{SF_1994__48_3_135296,
     author = {N.R. Reilly},
     title = {Completely regular semigroups as semigroups of partial transformations.},
     journal = {Semigroup forum},
     pages = {50--62},
     publisher = {mathdoc},
     volume = {48},
     number = {3},
     year = {1994},
     zbl = {0798.20054},
     url = {http://geodesic.mathdoc.fr/item/SF_1994__48_3_135296/}
}